Read More

More heath news

Mr Khan said: “Every year flu affects thousands. The flu vaccine is the best protection we have against an unpredictable virus.

"I’m an asthma sufferer and I know how important it is to protect yourself by getting the flu vaccine if you are in an at-risk group.

"I’ve had mine and I encourage all [those] eligible to go and get their free flu vaccine too.”

Sadiq Khan is urging people to ensure they are vaccinated (Image: PA)

There are concerns this year's flu may be among the worst in recent memory on account of severe outbreaks, including the "Aussie flu" , having already been reported overseas, although PHE said last month it was too early to tell whether this would have an effect.

This year, the national flu vaccination programme aims to boost the uptake of the vaccine to help the most vulnerable people prepare for winter, and more importantly, avoid a visit to the hospital.

People with respiratory diseases such as asthma, cardiovascular problems including heart disease and those with chronic liver disease, are more likely to die if they catch the flu.

The jab helps prevent complications that can arise from the common infectious illness.

Video Loading

Video Unavailable

Click to playTap to play

The video will start in 8Cancel

Play now

Sir Trevor, who is 78, recorded a special message urging people to act.

“This year, it’s more important than ever because of the heavy flu season being reported overseas," said Sir Trevor. "And if you’re 65 or over, it’s free.

What is the flu?

First things first, the flu should not be mistaken for the common cold.

The symptoms are different, more sudden, severe and last longer.

Although it is widely known you can catch the flu all year round, it is most common in winter.

What are the symptoms?

High temperature (fever) of 38C (100.4F) or above

Tiredness and weakness

Headache

General aches and pains

Dry, chesty cough

Sir Trevor's had his jab - but have you? (Image: NHS - Healthier North West London)

Who is elible for the free flu vaccine?

The most vulnerable groups of people at increased risk from the effects of the virus, which include:

Children aged two to eight

Pregnant women

People aged over 65

Those with long term health conditions

Carers and care home workers

An annual flu vaccine nasal spray is given to healthy children in school years up to Year 4.

Where can you get vaccinated?

The flu vaccine can be administered in local pharmacies, GP practices and maternity services.

When should you get vaccinated?

According to the NHS, the prime time to have the vaccine is in the autumn.

So anything between the beginning of October to early November.

Flu prevention methods

You can prevent yourself from catching the flu or stop it from spreading with good hygiene.

Some of the basic methods include:

Always wash your hands with soap and warm water

Keep surfaces clean to get rid of any germs this includes things like your computer keyboard, telephone and door handles

Cover your mouth and nose when coughing or sneezing

Dispose of used tissues immediately

Stay off work or school until you feel better

Children between ages five to nine have been one of the most affected groups (Image: Getty Images/iStockphoto)

What the experts say

Dr Yvonne Doyle, Public Health England regional director, said: “Flu is capable of having a huge impact over the winter months, particularly in schools, hospitals and care homes where we might see outbreaks.

“Children are known to be super-spreaders of flu because they mix very closely with each other and are generally not as good as adults at using tissues for their noses and washing their hands.